Filling-replenishing loom.



No; 853,199. PATENTED MAY 7, 1907.

0. H. DRAPBR. FILLING REPLENISHING LOOM.

APPLIQATION FILED MAY 1-9. 1906.

3 SHEETS-SHEET 1.

7 PATENTED MAY 7, 1907. G.H.DRAPER.

FILLING REPLENISHIN'G LOOM.

APPLICATION FILED MAY 10. 1906.

3 SHEETS-SHEET 2.

No. 858,199. PATBNTED MAY], 1907.

G.H.DBAPER.

FILLING REPLENISHING LOOM. APPLICATION FILED MAYIQ. 1906.

3 SHEETS-SHEET 3.

I w A 4 56 it 26 26 13'? 2g mum 6 i T 2; I

UNITED STA ES PATENT OFFICE.

- CLARE ii. DRAPER, OFHOPEDALE, MASSACHUSETTS, A SICNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, 'A CORPORATION OF MAINE.

ElLLING-REPLENISHING LQOM- Specification of Letters Patent.

, Patented May 7, 1907.

Application filed May 19, 1906. Serial No. 317,662.

To all whom it may concern:

Be it known that I, CLARE H. DRAPER, a' citizen of the United States, and a .resident of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Filling-Replenishing Looms, of which the following description, in connection with the accompanying drawings, is a specification like letters on the drawings representing like arts. p Many looms equipped with automatic mechanism to replenishthe running filling are now provided with double detectors, that is, with two instrumentalities to detect filling absence on alternate icks, so that the detecting action takes p ace on each pick. A loom-of this character forms the subject-" matter f United States Patent No. 727,014 granted May 5, 1903 to A. E. Staflord, the operation of the filling-re lenishing mechanism being effected u o'ndbtection of fillin absence b either or li devices; 11 a later patent, No. 789,291

- granted Ma 9, 1905 to Northrop,=a loom'of the double etector, automatic fill ing-re-plen-f ishing type is also shown, embodying certain novel features of construction and arrangementpand also providing for the simplification of parts and reduction in cost of\manufacture and assembling.- Both of these pat-- ents Show the filling-replenishing mechanism directly controlled by one of the detecting devices, and indirectly controlled by .the

' general type of double detector loom provided:

j the production of means to obviate or overwith mechanism to replenish: automatically the running filling, andithas for its object come certain. faulty or improper operations which in practice occur 'at. times in loomof v the typecspecified. A Y

Upon careful consideration of the opera- .tion of a double detector loom-itwill be clear that, theoretically, so long -as the running filling is intactand properly laid each detector should detect-presence of filling on its ,own detecting pick, and if on onepick one detector'detects filling absence the other detector should detect such filling absence on the next pick. That'is, for theproperactiOn of the detecting instrumentalities,'. there must always be indication, of the presence of filling by the twodetectors succession when the 0th of the detecting automatically.

filling is present, or the two detectors must successively indicate filling absence after failure of the filling has been detected by either detector. If, then, one detector indicates presence of filling and on the next pick the other detector fails to indicatev such presence of-fillin'g, the latter being present as a-matter-of fact, there is an abnormal or improper action of the detectors. upon failure of filling, if one detector detects and indicates filling absence, and on tion is abnormal.

So, too,

the neXt pick the other detector fails to I detect suchfilling absence, the detector ac- As amatterof fact there are four condiabsence, while on the next pick the left-hand detector fails to detect filling absence.

C. The right-hand detectorindicates filling absence, though there is filling present, while on the following pick the left-hand detector detects presence of filling. 7 Such action of the first-named detector may be due to slack or kinky filling, or the-detector may catch and fail to act properly.v

D. The left-hand detector indicates filling absence when the filling is present, while on the next pick the right-hand detector ives the .proper indication, such actionresu ting from the causes mentioned in case 0.

I haveherein so constructed and arranged the mechanism that upon the occurrence of any of'the abnormal detector actions hereinrabovereferred to the loom Will bestopped Improper or abnormal action of the detec tors or forks of a double detector loom'niay result in (a) thin places in'the cloth, caused by (l) the fork-tines striking the grid or grate, (2) lint intthe grid, (3).trailing thread (4) trailing or filling-end from the cloth, thread from the shuttle, (5) reel or shuttle vmis-threads; (6) thick" places .in the cloth, caused by co-operation of the right-hand fork and its actuator or weft-hammer, through failure ofjthe filling to tilt the fork; (0) unnecessary filling transfers or changes caused by the co-operation of the left-hand fork with its actuator, throu h failure of the filling to tilt the fork, (this a so makes a thick place in the cloth). In each of the fore oing cases it will be found that one fork is ti ted, and the 1n looms of the double detector type under discussion take-up is arrested when a fork detects filling absence, and consequently if a fork fails to detect such absence there will be no arrest of take-up and a thin place results.

As to the formation of thick places, if,a filling v absence indication is made by a fork when fillin is present the take-up is arrested, and

z 5 the thick place results.

In my present invention 1 have provided means whereby the loom willbe stopped automatically whenever the action or operation of the detectors abnormal, as will be 0 fully described hereinafter in the s'ubjoined specification,'and thevarious novel features of my invention will 'be particularlypointed out in the following claims.

As will appear hereinafter the present con- 3 struction is such that filling replenishment is I controlled'by only one of the detectors, thereby differing from the structures in the patents referred to, but arrest of take-up is effected by or through filling absence detection by either detector.

Figure 1 1s a top plan view, centrally broken out, of a ortion of 'an automaticfillingreplenishing oom embodying my present invention, the filling-detecting devices and 5 parts co-operating therewith or controlled thereby being shown in normal position; Fig. 2 is an enlarged left-hand side elevation of the main filling-detector and adjacent parts in the same relative position shown in 5Q Fig.1, with the knock-off lever for the shipper in section; Fig. 3 is a similar view but showing the position of the parts 'ust after the main detector has indicated same; Fig. 4 is a like view showing the re- 5 5 turn of the main detector-slide to its rear,- most position after having been moved into the outward position shown inFig. 3, and the loom will be stopped on the nextv following pick, as will be explained; Fig. 5 is a similar view of the parts shown in F1gs.'2, 3 ands,

the maindetector having indicated fillin absence and then the auxiliary or-rightand detector has 'lndlcated such absence b th detectors workmg properly so that loom s't'o page is notdesired, the positioning of t e ling ab-- parts as in F 5 preventing actuation of the knock-off lever, as will be described; Fig/ 6 is a partial longitudinal sectional-view of the mechanismshown in Fig. '2 and in the same relative position, the nearer side of the rearart. of "the fork-slide beingbroken ,out; ,ig. 7is adetail partly inelevation and partly infsection, of the parts illustrated in Fig. 5, and showing. the manner of ,-resetting the, same automatically from the position shown in Fig. 5 to that shown in Fi s. 2-0r 6. In the position shown in Fig. 7 0th detectors have detected filling absence, (which is a proper detector action) and consequently the arts are to be'reset withoutstopping the 00m; Fig. 8 is a side elevation of one member of the two part main slide; Fig. 9 is a" top plan view thereof; Fig. 10 is a like view of the second member'of the main slide Fig. 11 is a side elevation of such second member; Fig. 12 is a top plan View of the controller for the shipper-releasing latch.

- As has beenhereinbefore stated the loom in which my resent invention is embodied is provided wit 1 two filling-detecting devices or instrumentalities, so that whenproperly operating each ick is a detecting pick, and I have herein s own means adapted to arrest the operation of a take-up instrumentality upon filling absence detection by either detecting device, the latter being shown of the well known tilting, fork type.

So far as concerns the right-handor auxiliary detecting device it may be of usual con struction, and as shown in Fig.1 comprises a tilting detector or fork grand its slide g lon itudinally movable in the fixed guide 9 t e fork-tail 'g being adapted to co-operate with the hook ta of anactuator or weft-hammer X upon failure of the fork to be tilted on the detecting pick of such fork. Upon co opera tion of the forkandweft-hammerthe slide g* is moved outward against the action of its returning spring 8 and the arm d is swung outward to turn the rock-shafmdfllon which said arm is fast) in the direction of arrow 250,

Fig. 2, arresting take-up. This is effected .through arm d fast on the rock-shaft and having a lateral lug 01 Fig. 2, to engage the take-u pawl carrier a,- and thereby disen-' gage'tlie pawl from the usual ratchet, substantially as provided for in the Patent "No. 789,291 before referred to, but as'the wefthammer W is forward the lateral lug 80 thereon prevents the shuttle-feeler y from moving back, and a change of filling is prevented; as in United States Patent No. 805,497 granted November 28,1905 to Stafford.

Referring to Fig. 1 thelay A provided with shuttle-boxes B, B the automatically self=threading shuttle S, the filling-re lenishing mechanism, including the trans errer F" and the filling-feeder F (partly shown at the right hand side ofthe loom) and the controlling rock-shaft cl, which governs the 01peration of the replenishing mechanism; t shipper S, its notched holding plate N and I other or front member of the main slide isloom and the main detector f at the shipper side, such detector being shown as a ti the releasing device for the s i per, shown as a knock-off lever N fulcrume at n may be and are .all of usual construction in the Northrop type of loom such as shown in United States Patent No..529,940, dated November 27, 1894, and operate in a manner familiar to those skilled in the art. As will be manifest the detecting devices are located at opposite sides of the cloth, the auxiliary de-. tector or fork g at the replenishing side of the ting fork of familiar construction. The main fork-slide, and adjacent parts, are of novel construction in my present invention and will be described in sufficient detail to clearly explain the operationof the apparatus. 'The main fork-slide comprises two members, one of which is-movable with. and also relatively to the other, the fork sustaining member being clearly shown in Figs. 8-and 9 as an elongated flatplate 1 provided at its rear end with upright parallel and laterally-separated cheeks 2 between which the fork is fulcrumed, the rear end of the plate being open at 3 for the weft-hammer or actuator W, provided with a hook to, Figs. 1, 2, 6'and 7. The

. hook is slidably supported on a cross-bar {1 and 'co-operates with between the cheeks 2 the main fork-tail f when the main fork is not tilted on its detecting pick so that the forward stroke of the weft-hammer W will move outwardthe fork-supporting member 1 Saul member has atransverse end of the fixed stand or guide 7 and limitingreturn movement of the slide-member 1, Figs. 6 and 7.

' 'The side walls of the guide 7 are in prac tice provided .withinternal, longitudinal grooves to receive elongated ribs S on the cheeks 2, clearly shown in] Figs. 8 and 9, which prevent any liftin of the slide member and guide it in its ongitudinal movement, while supporting its rear end, for the bottom 9 of the guide extends for only a part of the full length of the latter, Figs, 6-and 7 and it is provided with an upturned abutment 10 which passes freely through the slotv like extension 3 of the opening '3. The

shown separately'in Figs. 10 and 11 and is made as a casting having parallel uprightsides 11,- connected at the bottom and deeply notched at their front ends at 12, and

upturned at their rear ends at 13 and connected by a cross-bar l4, the sides being reduced in thickness 'at 15, Fig. 10 and having onthe'ir inner faces opposite lugs l6 for a purpose to be described. Longitudinal, 0X

ternal ribs 17 on the thinner portions 15 of the sides are provided tofree'ly enter and slide in correspondin grooves in the stand or guide 7, in practice 51c front member of the slide rests upon the, plate-like member 1, as shown best in Figs: 6 and 7. The front ends ofthe checks 2 form upright shoulders or abutments 2 which engage the rear end of the other member of the slide when said two members are in normal relative position, as in Fig.1. v

Between the sides. 11 I have fulcrumed at 18 a resetting device, shown as a knuckleed to'at times rise above the tops of the sides 11 for a purpose to be described, the operative movement of such device being limited by the beveled end 21 of the base-portion 19 thereof coming into engagement with the part of the casting connecting the sides- 11. The use and operation of such resetting device will be described hereinafter. An arm 01 fast on the rock-shaft d is upturned and provided at its upper end with a lateral bend (i which enters .the.deep notch 12, as in Figs; 1 and 2, outward movement of the main slide as a-unit turning the rock-shaft d as usual to efiect the operation of the replen ishing mechanism.

From the foregoing it will now be clear why the actuation of the replenishing meching action of the main detector, for if the auxiliary fork g detects-filling absence its sl'ide moves forward and arrests take-up,

while the holding back ofthe shuttle-feeler g prevents replenishment of filling, detecting action of the main fork f, however, acting to arrest take-u and also'to cause filling replenishment, Vh'en the auxiliary. fork deanism is only effected by or through dtect- I tects and causes the rock-shaft d toturn in the direction of arrow 250, Fig-'2, the arm (1 will move the front member of the main slide outward, changing its position relative to the other slide member 1 and acting upon fro the controller for the shipper-releasing latch,

to be described,-butfilling replenishment will not beeffected'.

The tops of the sides 11 are each provided with a series of notches or depressions 22, 23',

24, the middle notches 23 being much deeper.-

than the innermost and outermost notches, and the notches co-operate with a latch-carrier'mounte-d on the front member of the main slide, the carrier being made as a castin and being'movable' longitudinally upon an also with said slide member. Said latoh-carrier isfshown as anelongated body 25 having its front" end extended to form a finger-piece 26 beyond. a cross-bar 27 extended laterally from opposite sides of the body and beveled on its under side, at 28', Fig. 6, ,to'form a detent, ,a latch 29 bein pivotally mounted at '30 on one end of'said bar. The cross-bar is ireduced in thicknessto accommodate the latch and. presents a shoiil .er 31, shown position of the laiicl'i-carrier, the notches or head 36 then being close behind the bar carrieron the front slide member; At the parts are so positioned the mam slide will betil the shoulder'35engagcs the abutment 10, stopping the carrier while the slide completes behind the lugs ,16.

.ndof latch hanging down in front of. the

clearly in-Figs. 2 to 5J0 prevent the lalch from dropping down out'of position. Thelatch depends'outside one-of the sides 11 of the front member of the main slide, as sh own, and is arranged toco-operateat times .w l fi the adjacent end of the knock-off lever N to rock the latter and release the shipper. The inner-end of the carrier-body -is enlarged laterally at 32, and on .i ts under side is provided with two depending lugs 33, and transverse shoulders 34, 35, the-latter being formed on'anupturned head-or bunter 36,. while on the upper side o he enlargement 32 is a'transverse stop or .ety rib 37, and at the forward end of said enlargement two lateral, oppositely-extended vided.

When the parts are assembled the enlargement 32 passes beneath thebar l4 and between the rear portions 1.7 of the sides of the front member of the main. slide, the detent -28 co-operating with one or other of the several notches 22, 23, 2-1, according to the serving as detent-stops in the operation of the device the inner or rear end of the carrier beingsupported on the fixed abutment 10'.

Normal position of the carrier is shown in Figs. 1, 2 and 6, and at such time the detent, 28 co-operates with the pair of notches 24, while the lugs 33 rest on the inturned projections or lugs 16,- the shoulder 35 being behind the abutment 10, the upper end of the hunter 14, limiting forward movement of the latchsame time the latch 29 is in inoperative position with relation to the knock-off lever. .It

may' be stated at this point that the spring 8 normally maintains the two members of the main slide pressed together :itthe shoulders 2 the slide as a whole being retracted and in its rear-most, normal position. \Vhen the moved outward as a unit if the tailf of the main forkf is engaged by the hook w-of the weft hamnier W, upon the outward or active stroke of the latter. If, however, the auxiliary slide 9 is moved outward the arm (I will be swung and it will slide forward the front member of the main slide, leaving the rear and larger member quiescent. Now let it be supposed that the main fork is not tilted on its detecting pick, then the main s' e is moved outward as a unit, and asit moves the latch-carrier will move with it units movement, the lugs 33dropping off and I This causes the detent 28 to draw out of the front pairof notches 24* and to drop into the deep notchesfl23, this condition of affairs being shown in Fig. 3, the

.moved outward. lugs 38 are proknock-off lever N The weft-hammer W returns and the spring 8 retracts-the main slide, the latch lifting over the lever 1 X and dropping behind it in operative position, see Fig. 4, in readiness to actuate theknock ofl' ever and release the shipper.

It will be seen by reference to Fig. .4 that the shoulder part 32 of the" carrier rests on the abutment 10 and the shoulder 34 is behind said abutment and in position to be engaged thereby under certain conditions. membering that the weft-hainmers \iV', VV move oppositely it will be clear that the latter is on its forward or active stroke while the main slide in returning aft-er having been It has been supposed that the fork f has not been tilted, and consequently the main slide-was-n1ove(l outward, positioning the parts as in Fig. 3, and first. it will be supposed that the auxiliary fork g is not tilted, or in other words, that both forksact successively in the same manner, thatbeing termed by me their normal action. 'As fork g is not tilted its slide g is moved outward. as ll re main slide begins to move back,

but the "armd will arrest the retractive movement of the front member of the main'slide before the latch 29 can draw over and drop,

behind the end of lever N and the said front member will be drawn forward, taking the latch-carrier with it until the shoulder 35 catches on abutment 10. The carrier is then held and the detent 28 is caused to pull out of-the deep notches 23, draw over the upper edge of the resetting device 19, 20' and drop into the shallow notches 22, as shown in Fig. 5, and by inspection of that figure it will be seen that the latch 29 is now held above and out of range of the'knocleofl' lever." The outward movement of the main slide as' a unit turned the rock-shaft (Z to .c'ause filling replenishment when the shuttle reached ,the replenishing side of the loom, and that having been effected loom stoppage isnot desired, under proper conditions. Consequently,-t'he parts having been placed in the position shown in Fig. 5 the returnof both members of the main slide to normal position does not alter the relative position i of the latch-carrier until the weft-liammer W again moves forward, the new 'lillinghaving tilted fork As the weft-hammer moves forward it will strike the hunter 36, see 'Fig. 7, and push forward the lat-cl'i-controller, the detent 28 acting upon the upper end of the resetting device and swinging it forward on its pivot 18. lifts the latch-carrier to carry the latch above and entirely clear of the knock-off lever, and the lugs 33 ride up onto the co-operating lugs 16, the movement of the latch-carrier carrydevice and causing the detent to drop into This movement of the resetting device 5 ing thedetent forward free oft-he resetting the notches 24, while the resetting device .drops back by gravity into normal position.

' absence, followed by like action of. the left- I engage the front member before the latter .has moved back far enough to' cause the 4 the latch is in its operative position, but

the orks are tilted, and the weft-hammer W against the bar 14, and acts to revent too detector action will be explained. In the tilts the. left-hand forkf, although the thread 9 begins to go back, on the next pick, but the 'In the fifth cause, vi z:-a real mis-thread,

The parts are thus restored and of the loom has been effected.

If the right hand fork first detects filling no stoppage hand fork, which is normal fork action, loom member. of the main slide, and the first change in the relative position of-the. latchcarrier is effected, the latch 29 then depending in front of the lever N Now the slide left-hand fork f detects filling absence and its .tail is caught by hook to, moving the main slide member 1 forward, and its shoulders 2 latch to drop behind the knock-off lever N and both members of the main slide then complete outward movement together, to the position shown in Fig. 3, and filling re plenishment is'provided for by or through the main detector action. On the return of the main slide to the position shown in Fig.

the resence of the new filling is detected,

acts as before described against the hunter 36, to effect resetting of the controller. When the first change in the relative osition ofthe latch-carrier and the main side occurs the safety rib or stop 37 is brought much of amovement of the carr1er,.its'position relative to thebar 14 being shown in Figs. 3 and 4, and on the change of the detent to the innermost-notches'22 the lateral extensions 38 co-operate, forthe same purose, with the upturnedpo rtion's 13 of the front member of the slide. i The operation of the mechanism hasbeen explained when both detectors o'r forks act successively to indicate filling absence, stoppage of the loom being avoided, and now the operation of the mechanism upon abnormal preceding reference to case (a), the formation of thin places, in the four causes men tione'd, the left-hand fork is tilted and theright-hand fork is nottilted, and vice'versa. I

that is, a f'ailure of the new filling thread to enter". the shuttle-eye, when. the freshly replenished shuttle is picked. to the'shipper side .of the loom-the filling is present ,and

doesnot. enter the shuttle-eye. On the-nextpick, to the replenishing side, the filling is broken, but the right-hand fork g will be tElted-by thefilling-end extending-from the cloth to the hopper, shown at t, Fig. 1, and it may he that this filling-end will remain in position and tilt the fork g for a number of picks, owing to-what may be a tardy aiction made clear.

that the temple thread-cutter is very often,

of the thread cutter i on the temple T, Fig. 1. Going back to the first pick in which the filling-end t tilted fork g, on the following When the forkf thus detects (the third pick of the sequence) the fork g i will be tilted'by the fillingend. On the return, 'or fourth pick,- to the left, fork fis again tilted, but the loom will be stopped by engage'mentof the weft-hammer'W with the hunter 36 of the latch-carrier, as will-now be First, however, it will be stated though not properly, set so as to cut the new filling-end after the first two or three picks after transfer, the setting'of the temple determining the time of action of the thread-. cutter, for the further forward toward the" front of the loom the temple is setthe later will the temple thread-cutter'act, andvice versa.

Returning to the mechanism, supposing areal mis-thread has occurred after a transfer of filling, and the thread has broken on the pick to the right, but fork ghas been tilted by the filling-end it, while on the next pick fork f detects filling absence, and consequently. the main slide is moved outward as a unit, and the parts are positioned as in Fig.3, filling rep enishment being called for. Onthe next pic t again tilts fork 9, so that its slide remains ,rfl lnescent; and fresh filling is inserted in the s uttle, which is now picked to the left,.and

" as there is then fillingpresent thefork f will be tilted, but on the'return of the. main slide the parts are positioned as in Fig. 4. Fork f being tilted the weft-hammer W moves forward and strikes the hunter 36,-pushing forward the latch 29 against the adjacent end of the knock-off lever N and rocking said lever to release the shipper .S-and thereby stop the loom. 7 that there is some fau t-to be corrected, and prevents the formation of a thin place, for it Thi ives the weaver notice.

will be obvious that if the right-hand fork is.

tilted (b the filling-end, or by any thing else, as or instance, the fork-tines striking the grid when the running filling is absent,"

take-up will not be arrested on that pick and if the loom is not promptly stopped athin place will be formed. .1 have thus provided means to indicate non-detecting action of the detector when filling is absent. Should either grid become choked with lint, so that its fork will be tilted bv-the lint, even when filling is absent, the loom will be'stopped.

If a broken thread trails from the shuttle it will cause an abnormal action ofthe detectors and loom stoppage will follow. When the thread breaks and. trails the trailing end is often long enough to tiltthe mainforkf, but on the opposite pick, the eye of the "shuttle being at the right-hand end of the shuttle the trailing end will not be long enough to tilt the auxiliary fork g, thereby preventing the abnormal fork action. As fork g detects filling absence its slide, moving outward, will cause the front member of the mainslide to move outward and the latch-carrier will have its first relative movement, but on the next pick to the left the trailing end will tilt fork f.

Now, as there is nothing to move outward the other member 1 of the main slide the front member thereof will have returned to the position shown in Fig. 4, with the latch 29 ready to operate, and as weft-hammer W comes forward it strikes the hunter 36, mov-.

2 ing the latch-carrier forward and operating the knock-off'lever N to stop the loom.

' The operation of the apparatus when any one of the five causes for making a thin place under case (a) occurs has now been ex- 2 5 plained, and it will be manifest that if thefork fis tilted and fork g fails to be tilted, when filling is absent, the mechanism will operate to effect loom stoppage. When either forkslide is moved forward by co-operation between the tail of its fork and the weft-hammer hook the latch-carrier will be given its first relative movement, dropping the detent 28 into the deep notches 23. If, then, the other fork-slide is movedputward the latchcarrier willb given its second relative move- "Tnent and the detent will becarried into the notches 22, from which position the latchcarrier willbe carried forward, by the action of the resetting device and theweft-hammer W, into its normal'positiomboth fork slides returning to their," normal positions. This is the operation during normal filling replen- .ishment, as'has been previously described.

If the main fork f first detects filling absence the parts assume the position shown in F-ig-.-.-3, and the rock-shaft d is turned'to effect filling re lenishment; and if for somereason the auXi ia'ry fork g is tilted. the relative position of the latch carrier will not be 59 changed. After the fresh supply of filling is inserted in the shuttle the latter is picked to the shipper side, and the new filling tilts fork f, so that the weft-hammer W comes forward, strikescthe bunter 36 (theparts being I ;si-

tioned as in Fig. 4,) and the forward movement of the latch-carrier brings the opera- 1 'tiv'ely positio ned latch 29 against the knockoff lever N? and releases the shipper to stop the loom. Similarly, if the fork-slide g moves 6o outward first the latch-carrier. is moved to bring the detent into the notches 23, the

front member of the main slide being moved forward by itself, and if then the fork f is tilted the weft-hammer W will cause loom stop-,

05 page as just described. The position-of the knock-off lever will show the Weaver whether stoppage ofthe loom was or was not due to the detector stop-motion, and when it shows that such stop-motionw as the cause of stoppage the weaver has his attention called thereby to an abnormal detector or fork action, preventingthe formation of faulty cloth by giving an opportunity for remedying the abnormal action and also for removing the source of such action.

In case (b), relating to the formation of thick places in the cloth, caused by (-o-operation ofthe tail of the right-hand fork g 'with the hook w notwithstanding the fact that filling is present, it will be manifest that this faulty action is local to the right-hand detecting evice, and consequently the left-hand fork is tilted on the next pick, the abnormal fork act-ion thus occurring. I/Vhflll ffll'k {I failed to tilt the take-up was arregted. and should loom stoppage not be effected a thick pl ac'e would inevitably be formedin the cloth.

The filling absence indication of Tdfkgrwsults, however, in outward movement of the front member of the main slide and the first relative change in the latch-carrier, as previously' explained, and on the next pick, (the parts thenbeing in the position shown in Fig. 4) the forward stroke of weft-hammer W will actthrough the latch-carrier to actuate the knock-ofi lever N and release the shipper, stopping the loom.

In case (0) relating to unnecessary filling 7 re pleni shrne-nts when thehfilling isintaetaml present, caused by the main or left-hand fork mcr, tliickplaoes will be formed and the replenishing mechanism is operated when such operation'is wholly unnecessary, if provision is not made forloom stoppage. In such case the failure of the forkf to tilt when filling is present'is due to some local cause such kink, or slackness, in the filling, and when thesaid fork gives a filling absence indication, the filling being present, the main slide is given the unitary outward movementpand the parts are positioned as in Fig. 3, while replenishment is called for.

tects presence of filling the slide g remains fquiescent andthe main slide moves back as a unit, to the position shown inFig. 4, with the latch 29 ready to engage lever-N It is probable, however, that inasmuch as the fdrkf failed to operate properly, it a, to give the correct indication, on the first pick above before specified, the fork willoperate prop'. erlv on its next detecting pick, a fresh sup- As fork g de- '120 referred to, because of some local; cause, as

ply of filling having been inserted in the shuttle, and the weft hammer W will engage the hunter 36, and through the latch loom stoppage will be effected, affording the weaver an opportunity to correct the fault. The formationof a thin or'a tliickplace in ordinary plain weaving for a single pick is not material,

co-operating with the hook of its weft-hamfault continuing it is stopped as such a thick place does not show, and the 100111 can be let back for such a thin place, but in the better grades of cloth such places are objectionable and expensive, the greater the extent of the thick or thin place the more objectionable and expensive.-

By my invention the prompt stoppage of I the loom checks the faulty formation practically at its inception, so that instead of the promptly and can then be readily corrected. I

So far as I am aware I am the first to-devise means, ina double detector loom, to de- "tect improper or abnormal action of the filling detectors to stop or cut short the'format1on of thin places in the cloth, and to detect such formation by or through means independent of the cloth; to prevent the formation of thickplaces by or through means actingindep'endently'of the Warp tension; to detect and stop the unnecessary operation of the filling replenishing mechanism when the of my invention.

. running filling is intact; and to detect trailing threads from either the shuttle or the cloth, and upon such detection cause loom stoppage. My invention, accordingly, is not restricted to the precise construction and arrangement herein shown and described,,as the same may bevaried or modified in different particulars by those skilled the art without departing from the spirit and scope I believe that it is also broadly new to provide a bi-part detector slide which mayhave a unitary movement in either direction, or a dlfi'erei'itlal movement, one part or member of such slide moving relatively to the other member at such time.

Having fully'tlescribed my invention, what i I claim as new and desire to secure by Letters Patent is 1f In'a loom, means to detect filling absence on each pick, and means ada ted to cause stoppage of the loom immediate y upon i atlopposite sides of the-loom and acting on] alternate picks, and means adapted to effect stoppage of the loom immediately upon fail- 1 detection of'filling absence on one pick and as failureto detect such filling absence on the next pick. p 2'. In a loom, two filling detectors, located ure of both detectors to act in the same manner on-tWo SZOCQSSIVG picks, the actual condl- .ti on of thefil'ling being the same on each pick.

. 3. In a -lo'om provided with mechanism to automatically replenish filling, me ans to effect stoppage of the loom upon the operation of said mechanism when the filling is intact.

4, In a loom, means acting independently of the warp tension to eflect stoppage of the" loom when the formation of a thick place is initiated and the filling is intact.

' 5. In a loom provided with automaticfilL ing-replenishing mechanism, means, operative independently of the cloth and including a detector to detect the absence of filling, to

detector movement when the filling is presv standing presence of filling.

detect filling laid, and 'means'to indicate failure of such" I cut.

9. In a loom, a tiltin detector to engage and be tilted by intact lling, and means to I indicate failure of the detector to tilt notwith- 10. In a loom, a detector to detect filling absence, and means to indicate non-detecti on by such detector when filling is absent.

1-1. In a loom, filling-replenishing mechanism, two filling detectors, at opposite sides of the loom, means to control the operation of said mechanism by or through one only of the detectors, and means adapted to effect stoppage of the loom immediately upon. the occurrence of abnormal operation of the detectors.

12. 'In a loom, in combination, two fillingdetectors normally adapted to indicate presence or absence of filling on alternate picks, filling-replenishing mechanism controlled as to its operation by filling absence indication;

to release the same when either detector of one of the detectofis, a shippen'a (1 means fails to indicate filling absence on the pick following such. an indication by the other detector. I

13, In a loom, in combination, two fillingdetectorsnormally adapted to indicate presenceor absence of filling on alternate picks, filling-replenishing mechanism controlled as to its operation byfilling absence indication of one of thexletectors, and means adapted to efiec't stoppage .of the loom automatically When the condition of the filling indicatedby one detector is immediately followed by indication of adj; erent condition b the other detector,. the condition of the filing being uncha1'1ged.-. a

detectors eachadapted to-arrest the opera? tion of a take-up instrumentality.upon deiro 14. In a loom,.in combination, two filling tection of filling absence, fi'lling-replenishing mechanism controlled as to its operation by one of said detectors, :1 shipper; a lmock-ofl' leverto release it, a latch to actuate thesaid lever, and means to operate said latch when on successive picks the detectors indicate P diiferent conditions of the filling whilcthe filling condition remains unchanged. 15. In-a loom, in combination, two fillingl ing or tl'iroughthe movement of one of said actuators when on successive picks the forks indicate different conditions of the filling wl If le l'he 'filling condition remains unchanged. lf-i] In a filling-replcnishing loom, two fill- I lefccf'ii'ig devices to detect the condition of the f illin g on each pick, each device including a filling-fork and. its slide, and a weft-" hamn'ier, a shipper, means to release it, a latch and a latch-earn er, and means to cause 1 5 direct and innnediate co-operationof one of the weft-hammers and the latch-carrier to actuate the latch when detection of filling absence by one fork is immediately followed by tilting of the other fork.

2o 17. .[n a loom, in combination, two filling-forks, a slide for each, one of said slides havingtwo members capable of unitary and differential movement, vfilling-rep]enishing mechanism controlled to its operation by unitary outward movement of the two-part slide, means to effect differential outward movement of the latter by or through detec tion of fllllhg absence by the other fork, and means to cause stoppage of the loom when 0 such differential movement of the slide immediately followed by imlication of filling presence by its fork;

. 1 8. ]n a loom, in combination, two fill- ]I1gf01'l(s, a slide for each, one of said sl des 3 5 having two members capable of unitary and differential movement, filling-replenishing mechanism controlled as to its operation by unitary outward movement of the two-part slide, due to detection of filling absence by 40 its fork, means to effect differential outward movement of said slide through detection of filling absence by the other fork, and means to cause stoppage of the loom when unitary outward. movement of the slide is followed, imn'iediately by indication of fillmg presence by'the other fork. i I 19. in a loom, in combination, main and auxiliary f1llingforks, at opposite sides of the loom, a slide for each, the main slide comprising two members capable of unitary and differential movement, filliiig replenishing mechanism controlled by "unitary outward n'iov'ement of the main slide, means to effect differential movement of the main slide vn'iembers upon. filling absence indication by *the auxiliary fork, a latch, a latch-carrier on one of the slide i-ncmbcrs and movable relatively thereto, a shipper, a knock-off lever therefor, and means to move the latch-carrier to opera- 66 tively position the latch with relation to saidlever and move the latter whenfilling absence indication of one fork is immediately followed by indication of filling presence by the other fork.

. 20. In 510cm,- in combination, main and auxiliary filling forks, at opposite sides of the loom, a slide for each, the main slide comprising two members capable of unitary and differential movement, filling-replenishing mechanism controlled by unitary outward movement of the main slide, means to effect differential movement of the main slidemembers upon filling absence indication by the auxiliary fork, alatch, a latch-carrier on one of the slide members and movable relatively thereto, a shipper, a knock-off lever therefor, means to move the latch-carrier to operatively position the latchwith relationv to the lever when filling absence is indicated by eitherfork, and means to automatically return said latch-carrier to normal position without acting upon the knock-off lever when filling absence indication by one fork is immediately followed by a like indication by the other fork on the next ick.

2]. In a loom, two illing-detectors to detect presence or absence of filling on alternatepicks, and means adapted to cause the operation of a loom-stopping instrumentality immediately upon the occurrence of contrary indications of said detectors on successive picks when the filling is present, or

after filling absence indication by either de-' tector. v

22. In a. loom, two filling-detectors to detect presence or absence of filling on alternate picks, and means adapted to cause the operation of a loom-storming lnstrumentallty immediately upon the occurrence of coIrtrary indications of said detectors on successrod" ishing mechanism controlled as to its operation by one of the detectors, a shipper, andmeans to release it immediately upon the occurrence of contrary indications of said detectors on successive picks when the filling is present or after detection of filling absence by either detector. w

24. In a loom, two filling-detectors to de.-.

tect presence or absence of filling on alternate picks, and means to effect a change in the operation of the low immediately upon ttl'ie occurrence .ofcontrary indications of sai(l'detectors on successive picks when the filling is present or after filling absence indication by either detector. e

In testimony whereof,-I have signed my name to this specification, in the presence of 2 two subscribing witnesses.

OLKREHDRAPER.

Witnesses: a

. I .ERANK J. DUToHnR,

, ALBERT W. EnwARDs f 

